import {
  rmSync,
  mkdirSync,
  existsSync,
  copyFileSync,
  writeFileSync,
} from "node:fs";
import { resolve, join } from "node:path";
import { type Plugin, defineConfig, normalizePath } from "vite";
import vue from "@vitejs/plugin-vue";
import electron from "vite-plugin-electron";
import { notBundle } from "vite-plugin-electron/plugin";
import pkg from "./package.json";

// https://vitejs.dev/config/
export default defineConfig(({ command }) => {
  rmSync("dist-electron", { recursive: true, force: true });
  const isServe = command === "serve";
  const isBuild = command === "build";
  const sourcemap = isServe || !!process.env.VSCODE_DEBUG;
  return {
    plugins: [
      vue(),
      electron([
        {
          entry: "electron/main/index.ts",
          onstart({ startup }) {
            if (process.env.VSCODE_DEBUG) {
              console.log("[startup] Electron App");
            } else {
              startup();
            }
          },
          vite: {
            build: {
              sourcemap,
              minify: isBuild,
              outDir: "dist-electron/main",
              commonjsOptions: {
                ignoreDynamicRequires: true,
              },
              rollupOptions: {
                external: [],
              },
            },
            plugins: [isServe && notBundle()],
          },
        },
        {
          entry: "electron/preload/index.ts",
          onstart({ reload }) {
            reload();
          },
          vite: {
            build: {
              sourcemap: sourcemap ? "inline" : undefined,
              minify: isBuild,
              outDir: "dist-electron/preload",
              rollupOptions: {
                external: [],
              },
            },
            plugins: [isServe && notBundle()],
          },
        },
        {
          entry: "electron/main/worker.ts",
          onstart({ reload }) {
            reload();
          },
          vite: {
            build: {
              sourcemap: sourcemap ? "inline" : undefined,
              minify: isBuild,
              outDir: "dist-electron/main",
              commonjsOptions: {
                ignoreDynamicRequires: true,
              },
              rollupOptions: {
                external: [],
              },
            },
            plugins: [isServe && notBundle()],
          },
        },
      ]),
      bindingSqlite3(),
    ],
    server:
      process.env.VSCODE_DEBUG &&
      (() => {
        const url = new URL(pkg.debug.env.VITE_DEV_SERVER_URL);
        return {
          host: url.hostname,
          port: +url.port,
        };
      })(),
    clearScreen: false,
  };
});

function bindingSqlite3(
  options: {
    output?: string;
    better_sqlite3_node?: string;
    command?: string;
  } = {}
): Plugin {
  const TAG = "[vite-plugin-binding-sqlite3]";
  options.output ??= "native";
  options.better_sqlite3_node ??= "better_sqlite3.node";
  options.command ??= "build";

  return {
    name: "vite-plugin-binding-sqlite3",
    config(config) {
      // https://github.com/vitejs/vite/blob/v4.4.9/packages/vite/src/node/config.ts#L496-L499
      const resolvedRoot = normalizePath(
        config.root ? resolve(config.root) : process.cwd()
      );
      const output = resolve(resolvedRoot, options.output);
      const better_sqlite3 = require.resolve("better-sqlite3-multiple-ciphers");
      const better_sqlite3_root = join(
        better_sqlite3.slice(0, better_sqlite3.lastIndexOf("node_modules")),
        "node_modules/better-sqlite3-multiple-ciphers"
      );
      const better_sqlite3_node = join(
        better_sqlite3_root,
        "build/Release",
        options.better_sqlite3_node
      );
      const better_sqlite3_copy = join(output, options.better_sqlite3_node);
      if (!existsSync(better_sqlite3_node)) {
        throw new Error(`${TAG} Can not found "${better_sqlite3_node}".`);
      }
      if (!existsSync(output)) {
        mkdirSync(output, { recursive: true });
      }
      copyFileSync(better_sqlite3_node, better_sqlite3_copy);
      /** `native/better_sqlite3.node` */
      const BETTER_SQLITE3_BINDING = better_sqlite3_copy.replace(
        resolvedRoot + "/",
        ""
      );
      writeFileSync(
        join(resolvedRoot, ".env"),
        `VITE_BETTER_SQLITE3_BINDING=${BETTER_SQLITE3_BINDING}`
      );

      console.log(TAG, `binding to ${BETTER_SQLITE3_BINDING}`);
    },
  };
}